Cone for the winding of yarns and threads



July 8, 1930, |NDENBERG Q 1,769,929

CONE FOR THE'WTNDING OF YARNS AND THREADS Filed April 6, 1929 .5711 @7767 (76b awjyzdznbav Patented duty 8, was

UNITED STATES PATENT orrlca.

ALBERT LINDENBERG, OF CHICAGO, ILLINOIS, ASSIGNOR TO OSCAR HEINEMAN COR- PORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS CONE FOR THE WINDING 0F YARNS AND THREADS Application filed April 8,

-This invention relates to cones used in the textile industry for the .wvinding of silk, rayon and other yarns and threads in a form to be used subse uently on knitting machines or whenever and wherever a cone type package is used.

The cone heretofore used for this purpose is a hollow uniformly tapered structure usually of compressed fibre, on which the yarn or thread is wound by rotating the cone at a high speed and coiling the yarn or thread thereon in successive spiral layers until the desired size of cop has been built up.

A trouble heretofore experienced in con- 0 nection with cones of this type resides in the tendency of the first few coils or windings at the ends of the cone to creep' inwardly on the latter and become bunched, instead of retaining the positions in which they were laid during the winding operation. This condition glves a false length of traverse, creating at the end portions of the cone a loose mass of yarn, which is not conducive to good winding, nor to good delivery when the package is unwound.

This tendency is most pronounced at the broad end of the cone; but sometimes occurs also at the narrow end of the cone in the case of cones having a relatively slight taper. This irregularity occurs especially in the coiling of rayon yarns on a cone tube, because rayon is somewhat more springy and wir than silk or cottonyarn or thread or similar soft fibres.

The object of my present invention is to provide a cone of such a structure that it will overcome the dificulty above-mentioned, and will cause the windings of the yarn or thread to retain permanently, or until unwound, the positions in which they were griginally laid on the cone by the winding My improvement is illustrated in the accompanying drawings, in which- Fig. 1 is an elevation of a cone embodying 1928. Serial No. 852,989.

my present improvement as applied to the wide or base end of the cone;

Fig. 2 is an axial section of the same;

Fi ,3 is an axial section of a slightly modified orm;

Fig. 4 is an axial section of a cone presenting a modified winding surface at both ends, the improvement illustrated in this figure being especially applicable to cones having but a slight taper;

Referring first to Figs. 1 and 2, A designates as an entirety the hollow cone which,

as above stated, is usually made of compressed fibre. Heretofore, it has been customary to corrugate, groove or otherwise more or less roughen the exterior surface of the cone to prevent slippage of the yarn or thread thereon. In a cone made in accordance with the present invention, however, this is not necessary, but the exterior surface may be simply the somewhat soft and slightly rough natural surface of the compressed paper pulp or other fibre of which the cone is made; the present invention providing other means for preventing the slipping, creeping or bunching of the yarn on the cone. This means consists essentially in giving to one or both end portions of the external surface of the cone anovel form or shape that will prevent the tendency of the yarn or fibre to creep inwardly and become bunched, as is the case with uniformly tapered cones at the present time. In its broad aspect, the improvement consists in providing the cone tube at one or both ends with a thread-receiving surface that is continuous with the external conical body surface of the tube and extends at an angle inwardly with respect to the conical external body surface. As shown in Figs. 1 and 2, the lower or base portion of the cone designated by B is made extei nally cylindrical. That is to say, the portion of the external surface of the cone from the bottom up to a point indicated by the transverse line C is cylindrical or parallel with the axis of the cone.

In the form illustrated in Fig. 3, the lower or base portion B'of the external surface of the cone A is slightly tapered in the reverse direction to the'taper of the upper portion of the cone.

In Fig. 4 I illustrate the application of the above principle to both ends of the cone. In this figure I show a cone A formed at its wide or base end with an external winding surface B" that is slightly tapered in the reverse direction to the taper of the intermediate or body portion, andat its upper end with a winding portion D above the line E that has a slightly greater taper than the inof the tube and lying within imaginary extensions of said conical surfaces.

ALBERT LINDENBERG.

termediate portion of the cone but in the same direction. This upper taper D is especially useful on cones having but a small degree of body taper, but is not so necessary on cones having a comparatively substantial taper such as shown in Figs. 1, 2 and 3.

It will be observed that all the forms illustrated the modified thread-receiving surfaces B, B, B and D lie within imaginary extensions of the main tapered external surface of the cone indicated by the dotted lines a a. In all of the forms shown, the coils of yarn or thread that are laid on the described end portions of the cones illustrated retained their place and do not slip or work inwardly, so

that the yarn or thread is laid uniformly and evenly between the upper and lower limits of the winding area, thus producinga neat looking and uniform product, which gives no trouble from slipping or bunching of the initial layers either in the winding or subsequent unwinding operation. To the securement of thisresult, the hump formed at the merger portions to the desired extent by a suitable abraiding machine.

I claim- 1. A winding tube of the character described comprising a conical body having at its larger end a thread-receiving surface continuous with, and extending at an angle inwardly with respect to, the conical external body surface of said tube.

2. A winding tube of the character described comprising a conical body having at its larger end a thread-receiving surface continuous with the external conical surface of 

